I do believe that is a signature restaurant and will require a dress code.
For the Signature Dining Restaurants, a "Business Casual" dress code is in effect:
Men - Dress pants, jeans or dress shorts and a T-shirt or long sleeve shirt with collar is required. (Jackets optional.)
Women - Jeans, skirts or dress shorts and blouse, sweater or dress is required.
NOT PERMITTED: Tank tops, swim suits or swim cover ups, hats for gentlemen, cut offs or clothing with rips/tears are not allowed. T-shirts with offensive language/graphics will also not be permitted.